“I was like ‘Oh my God, it’s like someone was reading my diary — this is exactly what I want,’” she recalled.

Only a few U.S. organizations offer people the chance to create video testimonials, which are meant to supplement and expand upon written living wills and Physician Orders for Life Sustaining Treatment, now available in 26 states. Do-it-yourself videos are also a convenient option.

One organization doing pioneering work in this field is the Institute on HealthCare Directives, founded by Dr. Ferdinando Mirarchi, the Pennsylvania physician whose work Forman heard about. Others include MyDirectives, a Texas company that helps people create digital advance directives, including personal video and audio statements; Life Messages Media of Wisconsin, which also creates video memoirs and ethical wills, a way to share your values with your family; and In My Own Words, launched by a geriatric psychologist in California.

These organizations hope the videos will help physicians and families interpret and follow written advance directives. About one-third of adults have such end-of-life documents.

“It can give everyone confidence that Mom was competent and knew what she was signing and that no one tricked her by sticking a document in front of her and asking her to sign,” said Thaddeus Pope, director of the Health Law Institute at Mitchell Hamline School of Law in St. Paul, Minn.Similarly, videos have the potential to ease some of the emotional angst that surrounds end-of-life decision-making. “A family gets to hear Mom saying, in her own words, what she wants, which can be profoundly reassuring,” said Dr. Monica Williams-Murphy, medical director of advance-care planning and end-of-life education for Huntsville Hospital System in Alabama.

Formats vary. The Institute on Healthcare Directives’ videos are carefully scripted and usually last 45 to 90 seconds. The goal is to convey essential information to physicians making crucial decisions (perform manual chest compressions? insert a breathing tube?) in time-pressed emergency medical situations.

Mirarchi helps draft scripts after taking a careful medical history, explaining various types of medical situations that might arise, and discussing clients’ goals and values in considerable depth. The cost: a one-time fee of $350, which covers 10 years of follow-up consultations and maintenance, or a setup fee of $50 to $100 accompanied by an annual fee of $35 to $50.

After consulting with the doctor, Forman realized her “do nothing” instructions could prevent her from being treated for medical crises that she might recover from. Now, her video states that if someone witnesses her having heart attack and she can receive medical attention within 15 minutes, resuscitation should be tried.

“I came to see that in my zeal to have my wishes known and respected, I was going to an extreme that didn’t really make much sense,” she said.

Easy accessibility to the videos is essential but may not be practical, yet. The institute houses videos on a server; they can be called up on digital devices via QR codes, or hyperlinked bar codes, that are printed on cards given to clients. (Forman carries hers in her wallet, next to her insurance card.) Passwords are discouraged because these might be a barrier in an emergency. Still, medical personnel aren’t accustomed to searching for cards of this sort.

Videos by MyDirectives clients also tend to be short — between 15 seconds and a minute. The service is free to consumers; the company’s business model relies on partnerships with health care organizations. “The consumer deserves to have their voice heard in electronic health records” that these organizations maintain, said Jeff Zucker, MyDirectives chief executive officer, who hopes that health systems will eventually embed patient videos in those records.

What weight video testimonials will carry in legal conflicts has yet to be determined. Only Maryland allows advance directives to be conveyed in a video format, while New Jersey explicitly recognizes video or audiotapes as supplements to written documents, according to the American Bar Association’s Commission on Law and Aging.Multimedia advance directives likely will be taken into account in end-of-life disputes, just as a daughter’s statement that “Mom told me this is what she wanted last week” is given consideration, Pope said.

“Since the only thing that constitutes clear and convincing evidence under the law is the written advanced directive, make sure your video is consistent with what’s expressed in these documents,” he advised.

Physicians seem receptive to the videos. According to a study published this year, doctors were more likely to agree about recommended treatments for patients in difficult circumstances after viewing patient videos, as well as evaluating written advance directives.

“Doctors always question whether we’re doing the right thing when it’s just the paper document,” Mirarchi explained. “When you can see a patient expressing what their true intended wishes are, in their own voice, looking into a camera, that’s a very powerful tool.”

For their part, patients seem comfortable speaking before a camera, according to unpublished research conducted by Dr. Angelo Volandes, an internal medicine doctor at Massachusetts General Hospital and a pioneer in creating videos that help patients understand the pros and cons of end-of-life interventions.

His group asked heart failure patients to describe what was important to them and what they’d want doctors to know if they weren’t able to speak for themselves. “Were people comfortable doing this? Heck, yeah — they were very comfortable and far more articulate than we give them credit for,” Volandes said.

He imagines primary care doctors bringing older patients into their offices for consultations about advance-care planning, now paid for by Medicare, and turning on a cellphone or a desktop camera. Ideally, family members would be present or Skyped in so they could be part of a recorded conversation.

You don’t have to wait for this kind of service to become widely available: You can make a video of this kind now, store it on your cellphone or tablet, and share it with your family members and doctors.

Even though he’s an experienced TV producer, Michael Gallagher, 54, chose to get professional assistance because of his complicated medical situation. Almost 30 years ago, Gallagher’s jaw was broken after two football players crashed into him as he was filming a game from the sidelines — a problem that required dozens of surgeries. Today, he struggles with chronic kidney disease as well as the aftermath of a 2005 car accident that broke his back and fractured his skull.

“My wish is that if I am in a situation where I’ve collapsed and a medical professional can get to work on me then and there, give me a shot. Do what you have to resuscitate me and intubate me through my nose, as opposed to my mouth,” said Gallagher, explaining the wishes that he’s recorded in a video prepared by Mirarchi’s company. “But if I’ve been found the morning after, cold and unaware, even if there’s some brain function, don’t try to bring me back.”